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Date: Wed, 16 Feb 2022 23:56:27 -0800
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, Roi Dayan <roid@...dia.com>,
Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 10/15] net/mlx5e: Add post act offload/unoffload API
From: Roi Dayan <roid@...dia.com>
Introduce mlx5e_tc_post_act_offload() and mlx5e_tc_post_act_unoffload()
to be able to unoffload and reoffload existing post action rules handles.
For example in neigh update events, the driver removes and readds rules in
hardware.
Signed-off-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../mellanox/mlx5/core/en/tc/post_act.c | 67 +++++++++++++------
.../mellanox/mlx5/core/en/tc/post_act.h | 8 +++
2 files changed, 54 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c
index 9e0e229cf164..ce7ba1951e25 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c
@@ -75,21 +75,47 @@ mlx5e_tc_post_act_destroy(struct mlx5e_post_act *post_act)
kfree(post_act);
}
+int
+mlx5e_tc_post_act_offload(struct mlx5e_post_act *post_act,
+ struct mlx5e_post_act_handle *handle)
+{
+ struct mlx5_flow_spec *spec;
+ int err;
+
+ spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+ if (!spec)
+ return -ENOMEM;
+
+ /* Post action rule matches on fte_id and executes original rule's tc rule action */
+ mlx5e_tc_match_to_reg_match(spec, FTEID_TO_REG, handle->id, MLX5_POST_ACTION_MASK);
+
+ handle->rule = mlx5_tc_rule_insert(post_act->priv, spec, handle->attr);
+ if (IS_ERR(handle->rule)) {
+ err = PTR_ERR(handle->rule);
+ netdev_warn(post_act->priv->netdev, "Failed to add post action rule");
+ goto err_rule;
+ }
+
+ kvfree(spec);
+ return 0;
+
+err_rule:
+ kvfree(spec);
+ return err;
+}
+
struct mlx5e_post_act_handle *
mlx5e_tc_post_act_add(struct mlx5e_post_act *post_act, struct mlx5_flow_attr *attr)
{
u32 attr_sz = ns_to_attr_sz(post_act->ns_type);
- struct mlx5e_post_act_handle *handle = NULL;
- struct mlx5_flow_attr *post_attr = NULL;
- struct mlx5_flow_spec *spec = NULL;
+ struct mlx5e_post_act_handle *handle;
+ struct mlx5_flow_attr *post_attr;
int err;
handle = kzalloc(sizeof(*handle), GFP_KERNEL);
- spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
post_attr = mlx5_alloc_flow_attr(post_act->ns_type);
- if (!handle || !spec || !post_attr) {
+ if (!handle || !post_attr) {
kfree(post_attr);
- kvfree(spec);
kfree(handle);
return ERR_PTR(-ENOMEM);
}
@@ -113,36 +139,35 @@ mlx5e_tc_post_act_add(struct mlx5e_post_act *post_act, struct mlx5_flow_attr *at
if (err)
goto err_xarray;
- /* Post action rule matches on fte_id and executes original rule's
- * tc rule action
- */
- mlx5e_tc_match_to_reg_match(spec, FTEID_TO_REG,
- handle->id, MLX5_POST_ACTION_MASK);
-
- handle->rule = mlx5_tc_rule_insert(post_act->priv, spec, post_attr);
- if (IS_ERR(handle->rule)) {
- err = PTR_ERR(handle->rule);
- netdev_warn(post_act->priv->netdev, "Failed to add post action rule");
- goto err_rule;
- }
handle->attr = post_attr;
+ err = mlx5e_tc_post_act_offload(post_act, handle);
+ if (err)
+ goto err_rule;
+
- kvfree(spec);
return handle;
err_rule:
xa_erase(&post_act->ids, handle->id);
err_xarray:
kfree(post_attr);
- kvfree(spec);
kfree(handle);
return ERR_PTR(err);
}
void
-mlx5e_tc_post_act_del(struct mlx5e_post_act *post_act, struct mlx5e_post_act_handle *handle)
+mlx5e_tc_post_act_unoffload(struct mlx5e_post_act *post_act,
+ struct mlx5e_post_act_handle *handle)
{
mlx5_tc_rule_delete(post_act->priv, handle->rule, handle->attr);
+ handle->rule = NULL;
+}
+
+void
+mlx5e_tc_post_act_del(struct mlx5e_post_act *post_act, struct mlx5e_post_act_handle *handle)
+{
+ if (!IS_ERR_OR_NULL(handle->rule))
+ mlx5e_tc_post_act_unoffload(post_act, handle);
xa_erase(&post_act->ids, handle->id);
kfree(handle->attr);
kfree(handle);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.h b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.h
index b530ec1981a5..f476774c0b75 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.h
@@ -24,6 +24,14 @@ mlx5e_tc_post_act_add(struct mlx5e_post_act *post_act, struct mlx5_flow_attr *at
void
mlx5e_tc_post_act_del(struct mlx5e_post_act *post_act, struct mlx5e_post_act_handle *handle);
+int
+mlx5e_tc_post_act_offload(struct mlx5e_post_act *post_act,
+ struct mlx5e_post_act_handle *handle);
+
+void
+mlx5e_tc_post_act_unoffload(struct mlx5e_post_act *post_act,
+ struct mlx5e_post_act_handle *handle);
+
struct mlx5_flow_table *
mlx5e_tc_post_act_get_ft(struct mlx5e_post_act *post_act);
--
2.34.1
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